钕铁硼(NdFeB)

    第三代稀土永磁---NdFeB主要是由稀土材料金属钕和铁及硼通过粉末治金的制造工艺生产而成。是目前磁性最强的永磁材料,磁稳定性好,不易退磁,广泛应用于电子器件、医疗器件、电声器材、微特电机、磁耦合器、磁分离器等方面。
  
   NdFeB,the 3th generation of rare-earth permanent magnet,is produced by powder metallurgical method with neodymium(rare-earth metal),iron and boron.At present it is the most powerful magnet.with good stability,good demagnetization resistance,it is widely used in electronic devices,medical devices,electroacoustic apparatus,mini-special motor, magnetic  coupler, magnetic separator,etc.
 

物理特性  PHYSICAL CHARACTERISTICS

 项目 Item

单位  Unit 数值  Value
居里温度  Tc Curie
temperature
0C 310-340
温度系数
Temp.coefficient
α  Br %0C -0.10~-0.12
α Hcj %0C -0.55~-0.6
回复磁导率  μrec
Relative recoil   permeability
  1.05~1.10
密度  D Density g/cm3 7.4~7.5
硬度  H Hardness HV 560~580
电阻率  ρResistivity μΩ.cm 150
  
NdFeB 磁体系列的磁性参数:
Magnetic Specifications of NdFeB Series Materials
    
牌号
Type NO
剩磁
Remanence 
Br
矫顽力
Coercivity 
 Hcb
内禀矫顽力
Intrinsic  Coercivity  Hcj
最大磁能积
Max.energy product
 (BH)max
工作温度
Ambient
Temperature T
  T KGs KA/m KOe KA/m KOe KJ/m3 MGOe 0C
N30 1.08-1.16 10.8-11.6 ≥780 ≥9.8 ≥955 ≥12 233-255 28-32  ≤80
N35 1.17-1.23 11.7-12.3 ≥850 ≥10.7 ≥955 ≥12 263-287 33-36  ≤80
N38 1.23-1.27 12.3-12.7 ≥876 ≥11 ≥955 ≥12 287-311 36-39  ≤80
N40 1.27-1.32 12.7-13.2 ≥876 ≥11 ≥955 ≥12 311-326 39-41  ≤80
N42 1.32-1.35 13.2-13.5 ≥876 ≥11 ≥955 ≥12 326-341 41-43  ≤80
N30H 1.08-1.14 10.8-11.4 ≥780 ≥9.8 ≥1353 ≥17 223-247 28-31  ≤120
N33H 1.14-1.17 11.4-11.7 ≥820 ≥10.3 ≥1353 ≥17 255-271 32-34  ≤120
N35H 1.17-1.22 11.7-12.2 ≥860 ≥10.8 ≥1353 ≥17 271-286 34-36  ≤120
N38H 1.22-1.26 12.2-12.6 ≥900 ≥11.3 ≥1353 ≥17 286-302 36-39  ≤120
N27SH 1.02-1.07 10.2-10.7 ≥740 ≥9.3 ≥1592 ≥20 199-223 25-28  ≤150
N30SH 1.08-1.13 10.8-11.3 ≥780 ≥9.8 ≥1592 ≥20 223-247 28-31  ≤150
N33SH 1.14-1.17 11.4-11.7 ≥720 ≥10.3 ≥1592 ≥20 247-271 31-34  ≤150
N25UH 1.00-1.06 10.0-10.6 ≥710 ≥8.9 ≥1990 ≥25 183-215 23-27  ≤180
 
1、可根据客户要求生产长方行、圆形、瓦形等各种形状,不同充磁方式的钕铁硼磁体。
   We can provide NdFeB magnets in shapes of block,disc,ring,tile with different directions of magnetization according to customer's demand.
  
2、一般方形磁铁尺寸:(Nominal block magnet dimensions)

公差(Tolerance)

长(L) 宽(W) 高(H)
2--200mm 1--150mm 0.5-80mm
0.08-0.40mm 0.08-0.40mm 0.06-0.20mm
   
3 、一般圆(环)磁铁尺寸:(Nominal ring magnet dimensions)

公差(Tolerance)

外径(O/Dia) 内径(I/Dia) 高(H)
1-150mm 1-140mm 0.5-80mm
0.08-0.40mm 0.08-0.40mm 0.06-0.20mm
 
4 、磁体表面防氧化层可采用镀白锌、五彩锌、镀镍、磷化、或环氧树脂喷涂。
    The coating can be white zine,color zine,nickel,phosphate processing or resin.